Terminal for storage batteries



April 24, 1928. Y 1,667,704

R. A. SZEITS TERMINAL Foa STORAGE BATTERIES Filed Sept. 14. 1926 2: nge.- 1,'

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Patented Apr. 24, 1928.

UNITED STATES RUDOLPH A. SZEITS, OF HAWTHORNE, CALIFORNIA.

TRMINAL FOR STORAGE FATTERIES.

Application led September 14, 1926.' Serial No. 135,828. y

This invention relates to improvements in battery terminals and more particularly to storage battery connectors and has for its object to provide a simple, eiicient and inexpensive device of this character.

Another object of my invention ,is to provide improved means for retaining storage batteryv terminals and the like wherein a positive clamp is provided for' seating the terminals. v

A still further object of my invention is to provide a unitary structure designed to retain lead-in eircuitfmaking wires at one end thereof and at the same time to securely attach in good electrical contact a battery terminal, means being provided in the nature of l an all-lead filling whereby the lead-in Wires and terminal are interconnected `and completely surrounded by material that will not corrodepyet which is a good conductor of electricity.

It is well known that the terminals of most storage batteries have a short life due to the fact that they materially and rapidly corrode during the electrolytic process and action while the battery is continuously in service, and therefore they must frequently be replaced, which calls for great expense of maintaining storage batteries.

AI havey found after considerable experimentation that my battery terminal retaining means for circuit-making purposes will have a very long life, and will not have a tendency to corrode due to the fact that 1 anchor the circuit-making terminals in `an all-lead wall, film coating or lling, and thus while the usual electrical conduction takesv place none of the usual corrosive defects are present by which the terminals will deteriorate.

With the above and other objects in view in part, showing the details of clamping the lead-in wires,

-Figure 3 is a cross-sectional view taken thru my invention,

Figure 4 is another sectional view, taken in elevation, showing the terminal in applied position,

Figure 5 is a detail sectional view of my invention taken in a plane at right angles to Figure 2, A

Figure 6 is atop plan view of a clamping nut, l

Figure 7 is a side elevation of the clamping nut, and

Figure 8 is a fragmental detail view of a terminal to be described.

Referring to the drawings 10 designates a suitable insulator block or base member 0f any desirable sha e, having the rounded extension 11 forme y with an opening 12, preferably cylindrical in contour. The block 10 is also formed with a rectilinear or other channel 13 starting at a point adjacent opening 12 and continuing towards the opposite end of the block where it intercommunicates with a bore 15 formed in the block tangentially of opening 12 and at right angles to the axis of said opening. An integral nipple 14 projects in. line with the bore 15 and is formed with external screw-threads for a purpose hereinafter set forth.

An annular socket 18 -is formed( in said block 10 caused by the formation integrally upon the block of an upstanding split conical ring 16, preferably madevof lead or othernon-corroding material, which -ring is disposed in registration with the opening 12 s0 that the annular socket 18 skirts this rin and is formed 'upon its internal wall wit screw-threads 19. It will be seen from Figure 4 that the channel 19 opens out agalnst the split conical ring 16.

The battery terminal consists of a cylindrical metal conducting body 2l formed at its upper end with an annular shoulder 22, and with an outwardly tapering extremity or portion 20. The ring 16 engages a marginal under edge 18 on the bottom side of the block 10, shown in -Figure 4.' I provide a clamping member or nut externally screw-threaded, and designated 22, which -is formed with a corrugated head or an by which it may be forcibly turned; this j nut screws into the screw-threaded wall 19 of the socket 18, and is formed with an in-v clamping or binding sleeve or nut 30 which drawn.

is screw-threaded externally of the nipple 14. It willbe seen that the strands of wire or the like 31 will fit loosely into the bore or passage 34a, (see Figure 3) which p assage is formed directly into a leaden filling or other non-corrosive' filling 33.

In operation ll take the strands of wire 31, insert same into bore 15, then push the humped end of insulator sleeve or shell 25 alon with conductor-26 against the nipple unti the nut 3() binds screw-threadedly the nipple 14. Inasmuch as channel 13 communicates with annular socket 17, andthe clamping nut 22 is removed from block 10,

I next may take molten lead or similar noncorrosive material and pour same into the end of channel 13 which shows thru socket 18, allowing the metal ,in molten condition to run as 1n a sprue, until itl completely lls channel 13; previously to pouring this molten lead, I may either have inserted the strandsl of wires 31, or else have lintroduced aI round plug into bore 15, in a manner to provide an annular jacket therearound; now 1t will be seen that as the molten lead runs thru the channel ,13, it will directly sui*- round the wire strands endwise and around their exterior lengths and completely embrace the same as with a film 33; or should the plug be inserted instead of the strands of wire then the molten lead will 'provide the leaden shell 33, with the bore 34a, the

latter bein developed as the plug is with- T en the strands of wire 31 may be inserted into the passage 34, and be united electrically with the lead filling 33 by means of a conductive cement 34 or lead itself, if` desired. As the. molten lead also contacts the leaden split conical ring 16 it will be seen that a direct continuous electrical but non-corrosive interconnection is provided between the insert in bore 15 and ring 16. y

The terminal 21 is now taken, and its shoulder 228L caused to contact and underly the marginal underedge 18 of the block 10, and thereupon the conical or tapering end 20 of the terminal will be snugly seated in projecting relation in the leaden ring 16; the nut 22 is now screw threaded into the socket v18, andits conical tubular surface i 22" caused to engage the split ring 16, as

Alead-in wires, said cord projecting into sa I do 'not intend to limit myself to the` exact details of construction shown but claim all variations falling within the scope and purview of the appended claims.

4 WhatI desire to protect and seek by Letters Patent is U 1. A device as described consisting-.lof

base member formed with a bore, a collar,

and a 'channel communicating with said bore -85 and collar, said channel being completely filled with lead, means associated with said y collar for clamping in position an electrical terminal, said means having a leaden contact with said lead filling in said channel, and a leaden film in said bore contacting with said'leaden filling and adapted Vto 'receive and clamp an electrical cord. t

2. A device as described consisting of a base member formed with an internal bore, a nipple formed in a plane with said bore externally of said base member, a leaden film linin the said bore, a flexible electrical circuit-ma ing cord'welded so as to be held vin contact with said leaden film of said bore and projecting snugly into the latter, means carried by saidbase member for clamping a terminal ofca battery, and means establishing a non-corrosive connection between said terminal and said leaden film of said bore.

3. In combination, an insulating body formed with a circular opening at one end and with an internal bore arranged tangen tially of said opening, there being a channel intercommunicating with said borel and opening, a non-corrosive terminal receivin and clamping fitting engageable in sai opening, athreaded nipple projecting from said bore and receiving a. cord containing bore, means engaging said nipple threadedly and also said cord to positionv the latter rela- I tively to said bore, and a. filling of non-corrosive but conductive material around the terminals of said cord in said bore, and eX- 'tending into said channel to contact said fitting.,

'4. In combination with an insulator block formed' with a cylindrical socket, a split leaden conical ring carried upon said block and extending centrally and concentrically of said socket for receiving and clamping a terminal, a circuitfmaking wire member projectin into said block, a leaden body containe -in said block and connecting in elecnoemen trical contact said Wire member and said loaden ring, and rotatable means removably engaging in said socket and exerting a compressive clamping action around the split portions of said ring.

5. In combination with an insulating block formed with a bore and having a threaded nipple projecting in line With said bore and communicating therewith,said block formed with an opening, a split conical leaden ring formed in registration with said opening, said block being formed with va channel around said rinfr having al threaded Wall and With a. rectilinear channel communicating with the .first channel and With said bore, a terminal having an annular shoulder engaging the marginal edge of said opening, and having a tapering portion snugly projecting into said ring, twisted Wires projecting into said bore, a flexible sleeve enclosing said Wires and having an annular hump, a clamping sleeve forcing said annu- .lar hump of said sleeve against the bore and threadedly engaging said nipple, a leaden filling in said rectilinear channel extending into said bore to surround said wires, and also contacting said leaden ring, means holding said Wires a ainst displacement and a nut for manual y compressing said split ring around said terminal.

6'. In combination, an insulator base member having an internal bore, a lead-en Wall formed coextensively in said bore, a leaden body joining said leaden Wall at one point and extending internally in said base meinber, said base member having an opening therethru at right angles to' said leaden body, and means formed of insulated material for simultaneously engaging said base' member and said leaden body for clamping a terminal extending into said opening, in contact With said leaden body.

In Witness whereof he has hereunto set his hand this thirty first day of August, 1926.

R. A. SZEITS. 

